package com.xzjie.common.web.utils;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * Created by asus on 2017/8/16.
 */
public class PathFormat {

    private static final String TIME = "time";
    private static final String FULL_YEAR = "yyyy";
    private static final String YEAR = "yy";
    private static final String MONTH = "mm";
    private static final String DAY = "dd";
    private static final String HOUR = "hh";
    private static final String MINUTE = "ii";
    private static final String SECOND = "ss";
    private static final String RAND = "rand";

    private static Date currentDate = null;

    public static String parse ( String input ) {

        Pattern pattern = Pattern.compile( "\\{([^\\}]+)\\}", Pattern.CASE_INSENSITIVE  );
        Matcher matcher = pattern.matcher(input);

        PathFormat.currentDate = new Date();

        StringBuffer sb = new StringBuffer();

        while ( matcher.find() ) {

            matcher.appendReplacement(sb, PathFormat.getString( matcher.group( 1 ) ) );

        }

        matcher.appendTail(sb);

        return sb.toString();
    }

    /**
     * 格式化路径, 把windows路径替换成标准路径
     * @param input 待格式化的路径
     * @return 格式化后的路径
     */
    public static String format ( String input ) {

        return input.replace( "\\", "/" );

    }

    public static String parse ( String input, String filename ) {

        Pattern pattern = Pattern.compile( "\\{([^\\}]+)\\}", Pattern.CASE_INSENSITIVE  );
        Matcher matcher = pattern.matcher(input);
        String matchStr = null;

        PathFormat.currentDate = new Date();

        StringBuffer sb = new StringBuffer();

        while ( matcher.find() ) {

            matchStr = matcher.group( 1 );
            if ( matchStr.indexOf( "filename" ) != -1 ) {
                filename = filename.replace( "$", "\\$" ).replaceAll( "[\\/:*?\"<>|]", "" );
                matcher.appendReplacement(sb, filename );
            } else {
                matcher.appendReplacement(sb, PathFormat.getString( matchStr ) );
            }

        }

        matcher.appendTail(sb);

        return sb.toString();
    }

    private static String getString ( String pattern ) {

        pattern = pattern.toLowerCase();

        // time 处理
        if ( pattern.indexOf( PathFormat.TIME ) != -1 ) {
            return PathFormat.getTimestamp();
        } else if ( pattern.indexOf( PathFormat.FULL_YEAR ) != -1 ) {
            return PathFormat.getFullYear();
        } else if ( pattern.indexOf( PathFormat.YEAR ) != -1 ) {
            return PathFormat.getYear();
        } else if ( pattern.indexOf( PathFormat.MONTH ) != -1 ) {
            return PathFormat.getMonth();
        } else if ( pattern.indexOf( PathFormat.DAY ) != -1 ) {
            return PathFormat.getDay();
        } else if ( pattern.indexOf( PathFormat.HOUR ) != -1 ) {
            return PathFormat.getHour();
        } else if ( pattern.indexOf( PathFormat.MINUTE ) != -1 ) {
            return PathFormat.getMinute();
        } else if ( pattern.indexOf( PathFormat.SECOND ) != -1 ) {
            return PathFormat.getSecond();
        } else if ( pattern.indexOf( PathFormat.RAND ) != -1 ) {
            return PathFormat.getRandom( pattern );
        }

        return pattern;

    }

    private static String getTimestamp () {
        return System.currentTimeMillis() + "";
    }

    private static String getFullYear () {
        return new SimpleDateFormat( "yyyy" ).format( PathFormat.currentDate );
    }

    private static String getYear () {
        return new SimpleDateFormat( "yy" ).format( PathFormat.currentDate );
    }

    private static String getMonth () {
        return new SimpleDateFormat( "MM" ).format( PathFormat.currentDate );
    }

    private static String getDay () {
        return new SimpleDateFormat( "dd" ).format( PathFormat.currentDate );
    }

    private static String getHour () {
        return new SimpleDateFormat( "HH" ).format( PathFormat.currentDate );
    }

    private static String getMinute () {
        return new SimpleDateFormat( "mm" ).format( PathFormat.currentDate );
    }

    private static String getSecond () {
        return new SimpleDateFormat( "ss" ).format( PathFormat.currentDate );
    }

    private static String getRandom ( String pattern ) {

        int length = 0;
        pattern = pattern.split( ":" )[ 1 ].trim();

        length = Integer.parseInt( pattern );

        return ( Math.random() + "" ).replace( ".", "" ).substring( 0, length );

    }

    public static void main(String[] args) {
        // TODO Auto-generated method stub

    }
}
